# Security Advisory 2025-0001 (ZDI-CAN-26596, CVE-2025-3887)

<div class="vertical-table">

|                   |                                           |
| ----------------- | ----------------------------------------- |
| Summary           | Stack buffer-overflow in H.265 codec parser during slice header parsing     |
| Date              | 2025-04-24 18:00                          |
| Affected Versions | GStreamer gst-plugins-bad 1.x < 1.26.1    |
| IDs               | GStreamer-SA-2025-0001<br/>ZDI-CAN-26596<br/>CVE-2025-3887 |

</div>

## Details

Stack buffer-overflow in H.265 codec parser when handling malformed streams
before GStreamer 1.26.1.

## Impact

It is possible for a malicious third party to trigger stack buffer-overflows that
can result in a crash of the application.

## Solution

The gst-plugins-bad 1.26.1 release addresses the issue. People using older
branches of GStreamer should apply the patch and recompile.

## References

### The GStreamer project

- [https://gstreamer.freedesktop.org](https://gstreamer.freedesktop.org)

### CVE Database Entries

- [CVE-2025-3887](https://www.cve.org/CVERecord?id=CVE-2025-3887)

### GStreamer 1.26.1 release

- [Release Notes](/releases/1.26/#1.26.1)
- [GStreamer Plugins Bad 1.26.1](/src/gst-plugins-bad/gst-plugins-bad-1.26.1.tar.xz)

### Patches

- [Patch](https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8884.patch)